The central role of cognitive processes in the perpetuation of chronic fatigue syndrome.
ABSTRACT Chronic fatigue syndrome (CFS) is considered to be one of the functional somatic syndromes (FSS). Cognitions and behavior are thought to perpetuate the symptoms of CFS. Behavioral interventions based on the existing models of perpetuating factors are quite successful in reducing fatigue and disabilities. The evidence is reviewed that cognitive processes, particularly those that determine the perception of fatigue and its effect on behavior, play a central role in the maintenance of symptoms.
Findings from treatment studies suggest that cognitive factors mediate the positive effect of behavioral interventions on fatigue. Increased fitness or increased physical activity does not seem to mediate the treatment response. Additional evidence for the role of cognitive processes is found in studies comparing the subjective beliefs patients have of their functioning with their actual performance and in neurobiological research.
Three different cognitive processes may play a role in the perpetuation of CFS symptoms. The first is a general cognitive representation in which fatigue is perceived as something negative and aversive and CFS is seen as an illness that is difficult to influence. The second process involved is the focusing on fatigue. The third element is formed by specific dysfunctional beliefs about activity and fatigue.
- SourceAvailable from: Claas LahmannUmweltmedizin, Hygiene, Arbeitsmedizin. 01/2013; 18:135-152.
- [Show abstract] [Hide abstract]
ABSTRACT: [Clin Psychol Sci Prac 18: 325–330, 2011] The meta‐analytic review of Castell, Kazantzis, and Moss‐Morris (2011) is a valuable contribution to the debate about the efficacy of behavioral interventions for chronic fatigue syndrome (CFS). Again it is found that cognitive behavior therapy (CBT) has a positive effect on the outcomes of patients with CFS. However, a substantial number of patients do not profit (enough) from this intervention. Increasing our knowledge about the mechanisms of change and other relevant aspects related to the treatment response could help to improve further the efficacy and applicability of CBT for CFS. This commentary discusses some of these aspects and, where possible, research strategies are proposed.Clinical Psychology Science and Practice 12/2011; 18(4). · 2.92 Impact Factor
Conference Paper: A Generalized Reconstruction Algorithm for Compressed Sensing[Show abstract] [Hide abstract]
ABSTRACT: Owing to providing a novel insight for the signal and image processing, compressed sensing (CS) is considered as a promising method for such fields. Successful applications of CS depend mainly on the accuracy and speed of the reconstruction algorithms. Essentially, CS reconstruction process belongs to a discrete inverse problem with finite unknown variables, methods that ensure the numerical stability while increasing the quality of a solution should be employed. In this paper, a new objective functional, which has been developed using a combinational estimation and a generalized stabilizing functional, is proposed. An efficient iterative scheme that integrates the beneficial advantages of the homotopy algorithm and the quantum particle swarm optimization (QPSO) algorithm is designed for searching a possible global optimal solution. Numerical simulations are implemented to test the validity of the proposed algorithm. Excellent numerical performances and encouraging results are observed. For the cases considered in this paper, the accuracy of the reconstructed objects is significantly improved, which indicates that the proposed algorithm is very successful in solving the CS inverse problem. As a result, a promising algorithm is introduced for CS reconstruction.Proceedings of the 2010 International Conference on Intelligent System Design and Engineering Application - Volume 01; 10/2010